Device for rendering advertisements luminous by the opening or closing of doors



Aug. 23, 1-927.

KOLBE DEVICE FOR RENDERING ADVERTISEMENTS LUMINOUS BY THE OPENING OR CLOSING OF DOORS Filed NOV. 1, 1926 FIGJ ' In yen/6r WehrMaxKJz Patented Aug. 23, I927.

lTED STATES VIKTOR MAX KQLBE,

PATENT OFFICE.

OF BERLIN, GERMANY.

DEVICE FOR RENDERING ADVERTISEMENTS LUMINOUS BY THE OPENING OR CLOSING F DOORS.

' Application filed November 1, 1926, Serial No. 145,647, and in Germany June 8, 1925.

There exist already devices for rendering advertisements luminous by the opening or closing of doors, the respective circuit or circuits being closed and opened by a cutout actuated automatically by the respective door. A Also constructional forms have been designed in which lamps located in a shopwindow are supplied with current from a separate source of current, Whereas a second source of current supplies current to a plurality of other lamps when a circuit-closing device inserted into a floor is actuated.

Now, in contradistinction to those known devices, the gist of the present new device resides therein that the circuit-closing device, or cut-out respectively, for the luminous advertisement or advertisements is connected up in shunt with a circuit for a continually shown luminous advertisement 29 and is, besides, connected with a double switch in such a manner that the intermittently appearing luminous advertisement can be switched in either separately or together with the continually shown luminous advertisement whereby one of the two sources of current mentioned is saved.

The invention is shown diagrammatically and by way of example on' the accompanyingdrawing on whichFigure 1 is a total 30 view of a plant designed according to this invention; Figure 2 shows a wiring diagram pertaining thereto, Figure 3 illustrates dia- I grammatically two sets of. electric incandescent lamps arranged in symmetrical rela;

tion as when assembled on a sign board.

Fig. 4 is a. detail view of the door-operated switch showing its position when the door is closed. Fig. 5 shows the same switch when the door is open.

On the drawing, adenotes a frame which ,'may be so designed as to be adapted to be suspended in front of a shop window pane this latter may be protected-from shocks for instance by rubber suckers 0 secured to the board and adhering to the-pane by suction.

The frame a is provided with a plurality of incandescent lamps d distributed in any suitable manner, for instance as shown in Fig. 3, in which the lamps are distributed in two sets around the circumference of the frame. There are among these lamps three denoted with e which are those intended to burn continually, whereas the other lamps are to burn only as long as a certain-door is open, the respective circuit being closed from chains 6. If it is suspendedwhen that door is open, and opened when that door is closed.

The letters of reference 7', g, h denote an automatic cut-out comprising a metal strip f, a spring 9 and a button in The cut-out device is secured to that side of the doorframe' to which the door is hinged. The parts f and g are conductive, but insulated from each other by a piece 71 of insulating material. The cut-out is inserted into the circuit by means of its members 9 andh, andthe circuit is broken as long as the free end of the spring g is kept off the metal strip f by means of the button h, this button being forced inwardly by the edge of the door when the latter is 'closed. When the door is opened, the circuit will be closed, provided, a switch m m be in proper position therefore, as more fully dealt with hereinafter.

The current is supplied to the lamps of the board either by stranded wires or by sliding contacts, as best suited in the given case.

0 denotes asource of current, one pole of which is connected with one of the bind ing posts of a double-switch m m which is shown in Fig. 2 in that position in which no circuit is closed. This is the day-position in which the luminous board is not illuminated. When the two movable conducting members of the switch which are con ductively connected with each other have been turned to the right, upon the contacts and g, the electric connections are as folows:

The current flows from the +pole of the source of current over "the switch member m and thecontact q to the wire 7 which is connected 'with the three lamps e; these lamps are also connected with the wire 8 that is connected with the pole of, the source of current 0. This circuit is independent of the cut-out f, g, 71., and, therefore, independent of the opening and closin of the door operating said cut-out.

on the door is open and the circuitclos'ing device, therefore, closed (the switch member .411. resting still upon the contact q) the'current passes from the switch member 112/ to the switchmember m, further over the contact p, through'the wire 2?, the closed circuit-closing device f, g, h, the lamps d, and back to the source of current 0 through the wire 8.

If, however, the switch members m m are shifted to the left the otherwise continually burning lamps e are switched off and only the lamps d are supplied with current as long as the door is open. The path of the current is then: +pole of the source of current 0, switch members m and m, wire is, circuit-closing device 7, g, 71', lamps (Z, .wire 8. This circuit is interrupted when the door is closed.

The board a may have an inscription, as for instance attention, step or the like, and instead of being suspended by chains or the like, as in Fig. 3, it may be firmly affixed to the respective door or the like.

I claim:

1. In combination with a door, an illuminated advertising device comprising in comclosed by said switch in said second position.

In testimony whereof I afiix my s gnature.

VIKTOR MAX KoLBE. 

